Last seen: Sep 10, 2021
(c) 4.8 and 2 atm Explanation: Moles of A, (nA) = = = Moles of B, (nB) = = = Total pressure × total volume = (nA + nB) × RT p ...
Correct answer: (d) 70 m Explanation: Let V be the original volume of bubble. The final volume will be 8 V. Let p be the atmospheric pressure and ...
Correct answer: (d) All the above Explanation: All the given phenomenon occurs due to surface tension.
Correct answer: (c) NH3 Explanation: The higher the value of ‘a’, more the value of Tc, easy is the liquefaction.
Correct answer: (b) Straight line with a negative slope. Explanation: According to Boyle's law, PV = constant ∴ log P + log V = constant log...
Correct answer: (b) 14.1 Explanation: According to Graham’s Law Diffusion: = Since rate of diffusion = ∴ = or = = = = = ...
Correct answer: (d) 9.53 × 104 m Explanation: = mgh h = x = 9.53 × 104 m
Correct answer: Explanation: Let the mass of methane and oxygen = m gm. Mole fraction of O2 = = = = Partial pressure of O2 = To...
(a) Gypsum – CaSO4.2H2O (b) Copper sulphate crystals – CuSO4.5H2O (c) Sodium carbonate crystals – Na2CO3.10H2O
Sodium hypochlorite, NaClO; used in making household bleaches and for bleaching fabrics.
Baking powder; When baking powder mixes with water, then sodium hydrogen carbonate reacts with tartaric acid to evolve carbon dioxide gas which get...
Salt X is like sodium carbonate, Na2CO3, which is made from a strong base and a weak acid. On dissolving in water, salt X gets hydrolysed to form so...
Bleaching powder, CaOCl2. Ca(OH)2 + Cl2 → CaOCl2 + H2O
(a) NH4Cl, (NH4)2SO4 (b) NaCl, K2SO4 (c) Na2CO3, CH3COONa
(a) Compound X is Plaster of Paris. (b) The chemical equation for its preparation is: CaSO4.2H2O + Heat at 100°C + 373K → CaSO4.1/2H2O + 1H2O (c...
(a) Ammonium chloride, NH4Cl (b) Sodium chloride, NaCl (c) Sodium carbonate, Na2CO3
(a) Ca(OH)2 and Cl2 (b) NaCl, NH3, H2O and CO2 (c) 2CaSO4.H2O (d) NaHCO3 (e) NaHCO3
X is Sodium chloride. The process is called Chlor-alkali process.